JEE Main 2019 Chemistry question
The correct order of the spin-only magnetic moment of metal ions in the following low spin complexes, [V(CN)], [Fe(CN)], [Ru(NH)], and [Cr(NH)] is:
Answer: (A)
Solution
Low-spin unpaired electrons: V d = 3, Cr d = 2, Ru d = 1, Fe d = 0.